curl -XPUT 'http://127.0.0.1:9200/test/?pretty=1' 
curl -XPUT 'http://127.0.0.1:9200/test/test/1?pretty=1'  -d '
{
   "foo" : "bar"
}
'
curl -XPUT 'http://127.0.0.1:9200/test/test/2?pretty=1'  -d '
{
   "foo" : "baz"
}
'

curl -XGET 'http://127.0.0.1:9200/test/test/_search?pretty=1'  -d '
{
   "query" : {
      "terms" : {
         "_id" : [
            1,
            2
         ]
      }
   }
}
'

# [Fri Nov  9 18:00:28 2012] Response:
# {
#    "hits" : {
#       "hits" : [
#          {
#             "_source" : {
#                "foo" : "bar"
#             },
#             "_score" : 0.35355338,
#             "_index" : "test",
#             "_id" : "1",
#             "_type" : "test"
#          },
#          {
#             "_source" : {
#                "foo" : "baz"
#             },
#             "_score" : 0.35355338,
#             "_index" : "test",
#             "_id" : "2",
#             "_type" : "test"
#          }
#       ],
#       "max_score" : 0.35355338,
#       "total" : 2
#    },
#    "timed_out" : false,
#    "_shards" : {
#       "failed" : 0,
#       "successful" : 5,
#       "total" : 5
#    },
#    "took" : 0
# }

curl -XGET 'http://127.0.0.1:9200/test/test/_search?pretty=1'  -d '
{
   "query" : {
      "constant_score" : {
         "filter" : {
            "terms" : {
               "_id" : [
                  1,
                  2
               ]
            }
         }
      }
   }
}
'

# {
#    "hits" : {
#       "hits" : [],
#       "max_score" : null,
#       "total" : 0
#    },
#    "timed_out" : false,
#    "_shards" : {
#       "failed" : 0,
#       "successful" : 5,
#       "total" : 5
#    },
#    "took" : 1
# }

curl -XGET 'http://127.0.0.1:9200/test/test/_search?pretty=1'  -d '
{
   "query" : {
      "constant_score" : {
         "filter" : {
            "term" : {
               "_id" : 1
            }
         }
      }
   }
}
'

# [Fri Nov  9 17:58:13 2012] Response:
# {
#    "hits" : {
#       "hits" : [
#          {
#             "_source" : {
#                "foo" : "bar"
#             },
#             "_score" : 1,
#             "_index" : "test",
#             "_id" : "1",
#             "_type" : "test"
#          }
#       ],
#       "max_score" : 1,
#       "total" : 1
#    },
#    "timed_out" : false,
#    "_shards" : {
#       "failed" : 0,
#       "successful" : 5,
#       "total" : 5
#    },
#    "took" : 1
# }